*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,sans-serif;background:#0a0a0a;color:#e0e0e0;min-height:100vh}.hidden{display:none!important}#landing{display:flex;align-items:center;justify-content:center;min-height:100vh;position:relative}.landing-bg{position:fixed;inset:0;background:linear-gradient(135deg,#0f0f23,#1a1a2e,#16213e)}.landing-overlay{position:fixed;inset:0;background:#0006}.landing-content{position:relative;z-index:10;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:40px 20px;text-align:center;color:#fff}.landing-logo{height:60px;margin-bottom:1.5rem;filter:invert(1)}.landing-content h1{font-size:2.5rem;font-weight:700;margin-bottom:.5rem}.landing-subtitle{color:#888;margin-bottom:2rem}.dataset-list{text-align:left;margin-bottom:2rem}.dataset-list h3{font-weight:600;margin-bottom:.5rem}.dataset-list ul{list-style:disc inside}.dataset-list a{color:#93c5fd;text-decoration:none}.dataset-list 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#222;background:#141414;flex-shrink:0}#chat-messages{flex:1;overflow-y:auto;padding:.8rem;display:flex;flex-direction:column;gap:.6rem;min-height:0}.chat-bubble{background:#1a2a3a;border-radius:12px 12px 12px 4px;padding:.6rem .8rem;max-width:90%;animation:chatFadeIn .3s ease}.chat-bubble-time{font-size:.85rem;color:#4a9eff;margin-bottom:.2rem;font-variant-numeric:tabular-nums}.chat-bubble-text{font-size:.95rem;color:#ddd;line-height:1.4;white-space:pre-wrap;word-break:break-word}@keyframes 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#dataset-link-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#dataset-link .external-icon{color:#6b7280;font-size:12px}#file-section>ul{max-height:300px;overflow-y:auto;padding:0;margin:0;list-style:none}#file-section ul{padding-left:12px;margin:0;list-style:none}#file-section details{margin:2px 0}#file-section summary{cursor:pointer;padding:4px 8px;background:#2a2a2a;border-radius:4px;font-size:.85em;color:#9ca3af}#file-section summary:hover{background:#333}#file-section li{padding:5px 10px;margin:2px 0;background:#333;border-radius:4px;cursor:pointer;font-size:.8em;word-break:break-all}#file-section li:hover{background:#444}#file-section li.active{background:#4a9eff}#file-section li.loading:after{content:"  Loading...";color:#fbbf24;font-weight:600}@media(max-width:1200px){#viewer-layout{flex-direction:column}#right-panel{width:100%;max-width:none;max-height:none}}